As others have suggested, there are a couple ways to go about breaking through a fat-loss plateau. If I were you, this is what I'd do:
1. Bump your calories up to ~250kcal above your TDEE for a week. Then slowly bring them back down (~50kcal per day) until you're ~250-500kcal below your TDEE, (the lower you go beyond -250kcal, the faster you'll lose weight, but the greater chance you'll have of potentially losing strength/muscle more than you may find acceptable).
2. Set up a progression plan for your cardio. Most people only think about "progressive overload" in regards to resistance training. It can be very useful for cardio as well. For example, if you're currently doing ~30 minutes on the bike/treadmill/whatever, start there and add 1 minute each day. This adds up quickly, but I prefer to add cardio rather than take away cals.
3. Eat smartly to control your insulin. Stay away from high-glycemic carbs (I know some will challenge me on this, but for me it makes a difference). Before eating carbs or protein (both of which can be highly insulinogenic), consume some fat or fiber. I try to eat my veggies or fat source (nuts typically) ~5 minutes before eating my carbs/protein. This has been shown to reduce insulin response.
4. Follow this simple protocol until your weight loss begins to slow again. When it does, add in some Yohimbine/Caffeine before your fasted cardio. Supplements are not necessary, and for most, fat burners won't help much..however, once you get closer to 10% bodyfat, the
right supplements
can make a real difference in keeping fat loss going and breaking through plateaus. As I mentioned, you can use Y/Caf, or an all-in-one product like
Invalid Link Removed (50% off right now with code stack3d50).
5. As you add cardio and eventually, a good supplement, you should be able to keep progressing without reducing your calories too much. I have followed this approach down to ~9% bodyfat, which is even leaner than I was in my avi. If you feel the need to go any lower, you'll have to either add substantial cardio or further reduce calories...but anything under 10%, as John mentioned, is not really healthy or sustainable.